std::multimap<Key,T,Compare,Allocator>:: rend, std::multimap<Key,T,Compare,Allocator>:: crend

Returns a reverse iterator past the last element of the reversed * this . It corresponds to the element preceding the first element of the non-reversed * this .

This returned iterator only acts as a sentinel. It is not guaranteed to be dereferenceable .

Return value

Reverse iterator to the element following the last element.

Complexity

Constant.

Notes

libc++ backports crend() to C++98 mode.

Example

#include <chrono>
#include <iomanip>
#include <iostream>
#include <string_view>
#include <map>
using namespace std::chrono;
int main()
{
    const std::multimap<year_month_day, int> messages
    {
        {February/17/2023, 10},
        {February/17/2023, 20},
        {February/16/2022, 30},
        {October/22/2022, 40},
        {June/14/2022, 50},
        {November/23/2021, 60},
        {December/10/2022, 55},
        {December/12/2021, 45},
        {April/1/2020, 42},
        {April/1/2020, 24}
    };
    std::cout << "Messages received (date order is reversed):\n";
    for (auto it = messages.crbegin(); it != messages.crend(); ++it)
        std::cout << it->first << " : " << it->second << '\n';
}

Messages received (date order is reversed):
2023-02-17 : 20
2023-02-17 : 10
2022-12-10 : 55
2022-10-22 : 40
2022-06-14 : 50
2022-02-16 : 30
2021-12-12 : 45
2021-11-23 : 60
2020-04-01 : 24
2020-04-01 : 42

See also